The folks who ran the Semantic Technology Conferences ran a "Semantic Overflow" instance of the S.O. software and I discovered on that instance I could get a very high score by asking questions, not answering them. I could have outpaced the #1 contributor but I thought he really deserved his spot so I didn't take it but I took the #2 spot because he kept closing my tickets for an open source project he maintained. I did look at that stats and found that nobody had done anything similar on the real S.O.
One trouble with all systems of recognition is that a lot of people have pointy qualifications. My opinions on many subjects aren't that good but on some I really am an expert and it's particularly frustrated when you know you really know your shit and you get shouted down.